Wrench.



P'ATENTED DEC. 8, 1903. J. T. MYERS,-

WRENCH. AI PPLICATION FILBD MAR. 17. 1903.

N0 JIODEL.

Gi /WT UNITED STATES Patented December 8, 1903.

PATENT FFICE.

JOHN MYERS, OF CULMERSVILLE, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TOANTON HARTIG, OF TARENTUM, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 746,643, dated December8, 1903.

I Application filed March 17, 1,903. Serial No. 148,189. (No model.)

To all whom it may concern:

Be it known that I, JOHN T. MYERS, a citizen' of the United States ofAmerica, residing at Oulmersville, in the county of Allegheny and Stateof Pennsylvania, have invented certain new and useful Improvements inWrenches, of which the following is a speci fication, reference. beinghad therein to the accompanying drawings.

This invention relates to certain new and useful improvements inwrenches, and has for its primary object to construct a wrench which maybe advantageously used either as the ordinary monkey wrench or as apipewrench and which may be rapidly and easily adjusted, so as to fitvarious-sized nuts and burs.

A further object of the present invention is to construct a wrench inwhich a greater leverage is provided as the wrench is adjusted to fitthe various-sized burs.

A still further object is to provide novel means for the rapidadjustment of the jaw and for the secure holding of the same in theadjusted position.

Briefly described, the invention comprises a wrench-shank provided withteeth on two of its opposite faces, which teeth are adapted to engagewith op positely-disposed teeth in the handle of the wrench. TheWrench-shank is provided at its outer-end with a rigid jaw, the saidshank telescoping into the handle and being preferably backed by aspring interposed between the end of the shank and the end of the recessin the handle. The handle proper is capable of rotation on the shank andis connected to the inner jaw of the wrench, the said handle carrying aspringpressed pawl normally engaging in the pocket provided therefor inthe inner jaw of the.

wrench, whereby the handle is held in the locked position. The outer jawis preferably constructed with a toothed surface at one side of thewrench-shank,and the inner jawcarries the toothed dog, whereby thewrench may be advantageously used as a pipe-wrench, while that portionof the jaws extending to the opposite side of the wrench-shank may beadvantageously used for nuts and burs.

In describing the invention in detail reference is had to theaccompanying drawings,

forming a part of this specification, and wherein like numerals ofreference indicate like parts throughout the severalriews, in which--Figure 1 is a detail side elevation of my improved wrench. Fig. 2 isarear elevation of the same. Fig. 3 is a central vertical sectionalview. Fig. 4 is a transverse sectional View on the line 3 3 of Fig. 3.

To put my invention into practice, I provide a wrench-shank 1, which issubstantially rectangular in cross-section and provided on two oppositefaces with teeth 2. Atits outer end this wrench-shank carries a jaw 3,the arm or extension4E of which is adapted to coact with the arm orextension 5 of the inner jaw 6, and the arm or extension 7 of the jaw 3is adapted to coact with the toothed dog 8, which is pivotally mountedin the inner jaw 6. The arm or extension 7 of the jaw 3 has a toothedsurface 9, which is preferably made with the two side faces at an angleto each other whereby to receive a pipe therein. The pipe, which will beheld,will be gripped at two points by toothed surfaces 9 and at the sametime on the opposite side of the pipe by the teeth of the dog 8. Thisdog 8 is pressed by a spring 8 and is pivoted in the pocket or recessformed between two lugs 10, cast integral with the jaw 6, and back ofthispocket or recess is another pocket or recess 11 to receive the outerend of the pawl or catch 12, pivoted between a pair of lugs 14:, carriedby the handle 15. The pawl 12 is normally held in engagement with thepocket or recess 11 by means of the spring 16. The handle member 15 ismade hollow to receive the wrench-shank therein, and this handle memberis'provided on two opposite faces of its. bore with teeth 17, which areadapted to engage with the teeth 2 on the wrench-shank when the handlememher is in a certain position, and when given a one-quarter turn theteeth on the handle member are moved out of mesh with the teeth on thewrench-shank and the latter is free to be adjusted. The wrench-shank ispreferably under the tension of a spring 18, which may be inserted intothe handle through the opening in the rear of the handle and afterwardclosed by means of the screw plug or nut 19, or the spring may beinserted in the recess through the other end of the handle prior toplacing the wrench-shank therein. The handle member, at its outer end,is connected to the inner jaw 6, this being accomplished by means of atongue 20, carried by the jaw 6 and engaging inlthe groove 21, formed inthe periphery of the handle member, near its upper end, the lugs 14forming stops to limit the rotary movement of the handle member in eachdirection.

It is to be noted that when the handle member is given a one-quarterturn the teeth 17 will be disengaged from the teeth 2, and thewrench-shank and outer jaw are then free to be moved away from the innerjaw 6 or toward the same, as desired, and when the handle-member isgiven a one-quarter turn in the opposite direction the teeth will beagain engaged and the jaws may be held in the adjusted position.

It will be obvious that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In combination with the handle provided in its lower end with a plug,said handle being hollow and having the upper portion of its interiorprovided with teeth, a shank slidably mounted in said handle and beingprovided with teeth meshing with the teeth thereof, the teeth of saidhandle and shank being so arranged as to be disengaged when the handleis given a partial turn, a spring interposed between the said shank andplug, and a movable jaw operatively connected to the said handle, andmeans for locking the said handle to the said movable jaw.

2. The combination with the shank provided at its outer end with a fixedjaw, of a handle provided with teeth engaging teeth formed on the shank,said handle being provided adjacent its upper edge with a peripheralgroove, a movable jaw provided with a tongue engaging the groove of thesaid handle, a dog carried by the said movable jaw, a spring-pressedpawl carried by the handle, and being normally received in a seat formedin the movable jaw, and a spring arranged in the said handle andengaging the said shank, substantially as and for the purpose specified.

In testimony whereof I affix my signature in the presence of twowitnesses.

JOHN T. MYERS.

Witnesses:

WM. T. FEssEE, GEO. T. OWENS.

